Diagnosaurus
Atrioventricular block (first, second, or third degree)
Etiology
- Increased vagal tone (first degree or Mobitz type I)
- Drugs: digitalis, calcium channel blockers, beta blockers, clonidine, other sympatholytics, amiodarone, other antiarrhythmics
- Age-related conduction system fibrosis or calcification (Lev's disease)
- Cardiac infiltrative disease (e.g., amyloid, sarcoidosis, hemochromatosis)
- Myocardial ischemia or infarction
- Myocarditis
- Chagas' disease
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Last updated: December 1, 2014
Citation
Zeiger, Roni F.. "Atrioventricular Block (first, Second, or Third Degree)." Diagnosaurus, 4th ed., McGraw-Hill Education, 2014. Medicine Central, im.unboundmedicine.com/medicine/view/Diagnosaurus/114583/all/Atrioventricular_block__first__second__or_third_degree_.
Zeiger RFR. Atrioventricular block (first, second, or third degree). Diagnosaurus. McGraw-Hill Education; 2014. https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114583/all/Atrioventricular_block__first__second__or_third_degree_. Accessed July 26, 2025.
Zeiger, R. F. (2014). Atrioventricular block (first, second, or third degree). In Diagnosaurus (4th ed.). McGraw-Hill Education. https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114583/all/Atrioventricular_block__first__second__or_third_degree_
Zeiger RFR. Atrioventricular Block (first, Second, or Third Degree) [Internet]. In: Diagnosaurus. McGraw-Hill Education; 2014. [cited 2025 July 26]. Available from: https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114583/all/Atrioventricular_block__first__second__or_third_degree_.
* Article titles in AMA citation format should be in sentence-case
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T1 - Atrioventricular block (first, second, or third degree)
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Y1 - 2014/12/01/
BT - Diagnosaurus
UR - https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114583/all/Atrioventricular_block__first__second__or_third_degree_
PB - McGraw-Hill Education
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DB - Medicine Central
DP - Unbound Medicine
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